Control of a Wind Driven Doubly Fed Induction Generator During Grid Faults (PDF)
(Sprache: Englisch)
Master's Thesis from the year 2013 in the subject Engineering - Power Engineering, grade: none, , course: Electrical engineering (Renewable energy), language: English, abstract: Wind electrical power systems are recently getting lot of attention,...
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Master's Thesis from the year 2013 in the subject Engineering - Power Engineering, grade: none, , course: Electrical engineering (Renewable energy), language: English, abstract: Wind electrical power systems are recently getting lot of attention, because
they are cost competitive, environmental clean and safe renewable power
source, as compared with fossil fuel and nuclear power generation. A special
type of induction generator, called a doubly fed induction generator (DFIG),
is used extensively for high-power wind applications. They are used more
and more in wind turbine applications due to ease controllability, high
energy efficiency and improved power quality.
This thesis aims to develop a method of a field orientation scheme for
control both the active and reactive powers of a DFIG driven by a wind
turbine.The proposed control system consists of a wind turbine that drives a
DFIG connected to the utility grid through AC-DC-AC link. The main
control objective is to regulate the dc link voltage for operation at maximum
available wind power.This is achieved by controlling the and axes
components of voltages and currents for both rotor side and line side
converters using PI controllers. The complete dynamic model of the
proposed system is described in detail. Computer simulations have been
carried out in order to validate the effectiveness of the proposed system
during the variation of wind speed. The results prove that , better overall
performances are achieved, quick recover from wind speed disturbances in
addition to good tracking ability.
Generally, any abnormalities associated with grid asymmetrical faults are
going to affect the system performance considerably. During grid faults,
unbalanced currents cause negative effects like overheating problems and
mechanical stress due to high torque pulsations that can damage the rotor shaft, gearbox or blade assembly. Therefore, the dynamic model of the
DFIG, driven by a wind turbine during grid faults has been analyzed and
developed using the method of symmetrical components. The dynamic
performance of the DFIG during unbalanced grid conditions is analyzed and
described in detail using digital simulations.
A novel fault ride-through (FRT) capability is proposed (i.e. the ability of
the power system to remain connected to the grid during faults) with suitable
control strategy in this thesis. In this scheme, the input mechanical energy of
the wind turbine during grid faults is stored and utilized at the moment of
fault clearance, instead of being dissipated in the resistors of the crowbar
circuit as in the existing FRT schemes. [...]
they are cost competitive, environmental clean and safe renewable power
source, as compared with fossil fuel and nuclear power generation. A special
type of induction generator, called a doubly fed induction generator (DFIG),
is used extensively for high-power wind applications. They are used more
and more in wind turbine applications due to ease controllability, high
energy efficiency and improved power quality.
This thesis aims to develop a method of a field orientation scheme for
control both the active and reactive powers of a DFIG driven by a wind
turbine.The proposed control system consists of a wind turbine that drives a
DFIG connected to the utility grid through AC-DC-AC link. The main
control objective is to regulate the dc link voltage for operation at maximum
available wind power.This is achieved by controlling the and axes
components of voltages and currents for both rotor side and line side
converters using PI controllers. The complete dynamic model of the
proposed system is described in detail. Computer simulations have been
carried out in order to validate the effectiveness of the proposed system
during the variation of wind speed. The results prove that , better overall
performances are achieved, quick recover from wind speed disturbances in
addition to good tracking ability.
Generally, any abnormalities associated with grid asymmetrical faults are
going to affect the system performance considerably. During grid faults,
unbalanced currents cause negative effects like overheating problems and
mechanical stress due to high torque pulsations that can damage the rotor shaft, gearbox or blade assembly. Therefore, the dynamic model of the
DFIG, driven by a wind turbine during grid faults has been analyzed and
developed using the method of symmetrical components. The dynamic
performance of the DFIG during unbalanced grid conditions is analyzed and
described in detail using digital simulations.
A novel fault ride-through (FRT) capability is proposed (i.e. the ability of
the power system to remain connected to the grid during faults) with suitable
control strategy in this thesis. In this scheme, the input mechanical energy of
the wind turbine during grid faults is stored and utilized at the moment of
fault clearance, instead of being dissipated in the resistors of the crowbar
circuit as in the existing FRT schemes. [...]
Autoren-Porträt von Mahmoud Mossa
Personal Details:Name: Mahmoud abdel-Wahab Mossa Mohamed
Date of Birth:1st, august, 1986.
Place of Birth:Qena, Egypt.
Nationality:Egyptian.
Marital Status:Single.
Major: Electrical Power and Machine Engineering.
Employment: Teaching Assistant in Electrical Engineering Department, Faculty of Engineering, Minia University, Egypt. Since January 2010 till now.
How To Contact:
Address:
. (Work): Electrical Engineering Department, Faculty of Engineering, Minia University, Egypt.
. (Home): Quft, Qena, Egypt.
Phone: . (Work): +2 (086) 2364510
. (Home): +2 (096) 6915181
Fax: +2 (086) 2346674
Mobile: +2 01229912291
E-mail:Eng_mahmoud2015@yahoo.com
Education:
May 2008 Faculty of Engineering, Minia University Minia - Egypt
B.Sc., Electrical Engineering (Power & Machines) (Very Good, with honor, Ranked 84.75%)
Graduation Project : "A DESIGN OF INDOOR AND OUTDOOR LIGHTING AND THE Electrical POWER DISTRIBUTION SYSTEM AND A STUDY FOR IT'S RELATED PROBLEMS. " (Distinction)
January2013 Faculty of Engineering, Minia University Minia - Egypt
Master in Electrical Engineering (Power & Machines)
Thesis title : "Control of a Wind Driven Doubly Fed Induction Generator During Grid Faults "
Scientific Experience:
.Publishing a research paper via multiscience publishing website, in wind engineering journal , with a title of '' Control of a Wind Driven DFIG Connected to the Grid Based on Field Orientation''. 1A.A. Hassan, 1Yehia S. Mohamed, 1A.M. El-Sawy, 1Mahmoud A. Mossa, Volume 35, Number 2, ISSN (10.1260/ 0309-524X. .35.2.127).
.Publishing a research paper with a title of '' Enhancement of Fault Ride Through Capability of Wind Driven DFIG Connected to the Grid ''. 1Mahmoud A. Mossa, 1A.M. El-Sawy, Journal of Engineering Sciences, Assiut University, Vol. 40 No 2 pp. - March 2012.
.Publishing a research paper via multiscience publishing website, in wind engineering journal , with a title of '' Novel
... mehr
Scheme for Improving the Performance of a Wind Driven DFIG During Grid Fault ''. 1Mahmoud A. Mossa, 1Yehia S.Mohamed, Volume 36, Number 3, ISSN (10.1260/0309-524X.36.3.305).
.Publishing a research paper via WSEAS publishing academy, in WSEAS Transactions on Power Systems, with a title of '' Field Orientation Control of a Wind Driven DFIG Connected to the Grid ''. 1Mahmoud A. Mossa, Issue 4, Volume 7, October 2012, ISSN (2224-350X).
.Publishing a research paper via WSEAS publishing academy, in WSEAS Transactions on Power Systems, with a title of '' Field Orientation Control of a Wind Driven DFIG Connected to the Grid ''. 1Mahmoud A. Mossa, Issue 4, Volume 7, October 2012, ISSN (2224-350X).
... weniger
Bibliographische Angaben
- Autor: Mahmoud Mossa
- 2013, 1. Auflage, 131 Seiten, Englisch
- Verlag: GRIN Verlag
- ISBN-10: 3656367760
- ISBN-13: 9783656367765
- Erscheinungsdatum: 06.02.2013
Abhängig von Bildschirmgröße und eingestellter Schriftgröße kann die Seitenzahl auf Ihrem Lesegerät variieren.
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